Figure 4.
Effect of centrally administered propranolol on peripheral tissue proinflammatory cytokine production following peripheral E.coli challenge. Rats were injected i.c.m. with either saline (Sal) or propranolol (Prop; β-antagonist) immediately prior to challenge with i.p. saline or E.coli. Animals were sacrificed 6 h later for measurement of A) IL-1, B) IL-6, and C) TNF-α in pituitary, spleen and liver tissues. Bars represent group averages +/− SEM (n=6-8/group). * represents p < 0.05 compared to saline-injected controls. # represents p < 0.05 compared to E.coli group receiving i.c.m. saline.